Cool Science Image: See the cool science image of the day.
DC Physics: The DC stands for Doug Craigen, a former physics professor.
Lewie's Fluorescent Mineral Page: Photos of fluorescent minerals, and some astronomy pics, too.
Loes Modderman Microscopic Science-Art: Items photographed under the microscope as art.
Major Tectonic Plates of the World
MicroAngela's Electron Microscope Image Gallery
Molecular Expressions: Images From The Microscope
National Museum of Natural History - Dinosaur Exhibits
Physics 2000: A site by the University of Colorado at Boulder that says, "Have fun learning visually and conceptually about 20th Century science and high-tech devices."
SciTechDaily Review: Science, technology, future developments, innovations, implications.
Tsunamis: More than Big Waves: An explanation of tsunamis from 1986, updated in 2004.
USGS Earthquake Hazards Program: National Earthquake Information Center
USGS (U.S. Geological Survey) Home Page
The Why Files: Science behind the news.
Cassini-Huygens Home Page: The JPL site for the Cassini voyage to Saturn and the Huygens probe descent to Titan, the largest of Saturn's moons.
The Geology of Mars: This was a toss-up between Space and Science, but I decided that Mars fell into the Space category.
Hale-Bopp is Coming!: Although Hale-Bopp is no longer visible in the northern hemisphere, there are still lots of good links to info on the comet, as well as astronomy, UFOs and scientific research, among others.
HubbleSite: The Hubble Space Telescope site, with news and images from the telescope.
Human Space Flight (HSF) - Space History: Starts from the days of Project Mercury, which first put man into orbit around the Earth.
International Space Station: Boeing site with an interactive (requires Flash player) model of the ISS. Click on sections for more information, then hit BACK button to go back to the model.
Jet Propulsion Laboratory
Jonathan's Space Home Page: A lot of information on space flight and satellites.
McDonald Observatory (University of Texas)
MeteoriteCentral: All kinds of information on meteorites, and also on the comet Hale-Bopp. Photos, including some from NASA's Jet Propulsion Laboratory.
NASA Ames Research Center
NASA Dryden Flight Research Center
NASA Dryden Research Aircraft Photo Collection: Although mostly devoted to planes, there is a section near the bottom linking to Shuttle photos. There are many varied aircraft to be seen, including the famous SR-71 -- The Blackbird.
NASA Glenn Research Center
NASA Goddard Space Flight Center
NASA History Office: A lot more than just space exploration. There are sections on aeronautics, space biology, space policy, space science, and much more, as well as a photo and video section.
NASA Home Page
NASA Johnson Space Center
NASA Kennedy Space Center - America's Spaceport
NASA Langley Research Center
NASA Marshall Space Flight Center
NASA Stennis Space Center
The Nine Planets: A multimedia tour of the solar system.
SEDS: Best of HST: The best images from the Hubble Space Telescope are to be seen here.
SETI Institute: The Search for ExtraTerrestrial Intelligence
SPACE.com - Something Amazing Every Day: Items about space and astronomy.
SpaceDaily.Com - Space News From Earth And Beyond
SpaceWeather.com - News and information about meteor showers, solar flares, auroras, and near-Earth asteroids.
Tech Museum | The Satellite Site!: Learn all about satellites, and even build 3 types (Java applet).
TerraServer-USA: Images of Earth from space. See objects like the shuttle launch pads at Kennedy Space Center in detail from space. Or click your way through maps until you find a particular place (USA only at present), and see it in detail.
Virtual Solar System @ nationalgeographic.com: Take a flyby virtual tour of the solar system in 3-D (or 2-D, if you prefer).
W.M. Keck Observatory: Located on the summit of Hawaii's dormant Mauna Kea volcano, this observatory has twin 10-meter telescopes.